I got asus b75m-a motherboard. Is my Asus gtx 670 direct u2 is compatible for that. Because when I installed the card I get only black screen. Any ideas
But you can still power your PC with it since it could be true 500W,
now after plugging your GPU, Did you connect the 8pin and another 8pin to it (dont do it again since you dont wanna risk your whole PC to be toasted).